Disassembly
![](https://www.mercedesman.ru/img/c-class/1597.jpg)
1. Remove pump gears (22) And (23) from the pump casing.
![](https://www.mercedesman.ru/img/c-class/1598.jpg)
2. Check the radial seal (24) and replace it if necessary.
3. Replace O-ring (25).
4. Lubricate the pump gears and install the pump in the pump housing. Insert pump gear (22) chamfer (arrow) to the pump housing.
Assembly
Assembly is carried out in the reverse order of disassembly.